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Speaker shootout update; aggressive treble eliminating some (fairly?)

I've been trying out speakers in a complicated shoot out, both bookshelves and towers — all in my home with my gear. I'm looking for speakers obtainable up to about $4k but could go up (or down) a bit if the right thing came along.

Basic facts: All speakers were run in at least 100 hours. Room is 27 x 14 x 6.5 ceilings. Powering with all QS tubes, 60w, NOS, tube R2R dac, and decent cables. No terrible reflection points; room not overly live or dampened. REL R 328 sub available but I did most listening without it.

Recent auditions, type:

Klipsch RP 600-M (budget singleton of the group)
Fritz Rev Carbon 7 mk II (bookshelf, 2 way, soft dome)
Focal 936 (tower, 3 way, inverted metal)
Martin Logan Motion 60s XTi (tower, 3 way, AMT)

Coming soon:

Salk SS 6M (bookshelf, 2 way, beryllium)
Dynaudio Evoke 30's (tower, 3 way, soft dome)

Let me speak just to the problems, rather than what was good about the speakers. So far, I've found the Klipsch, Focal, and especially the Martin Logans were all too bright — forward, aggressive, "turn it down" treble.

The ML's were the most impossible to tame and hardest to listen to on more tracks. (I did a lot of hanging of towels and other dampeners and other soft things to try to see if I could bring them to heel. I varied the recordings used. Changed cables/wires. No luck.)

The Focals were occasionally too bright; their bigger problem was a bit too much energy in my small listening space. They were better when I plugged their ports with socks.

I'm looking forward to how the next two speakers sound. The Dynaudio towers, I notice, are 10 inches shorter and half the weight of the other towers; not sure what that might mean, but it could just be right size for my space. I'm looking forward to seeing if the Salks bring more detail to the treble without also being too rolled off or harsh.

Hearing is very personal for physiological and taste reasons. However, if anyone has any thoughts about why I might be experiencing some of the phenomena I am (harsh treble, especially) based on my room or gear, etc., that might help me understand factors I'm not fully appreciating. Thanks.


128x128hilde45
brownsfan
1,508 posts
 
@decooney,  I just bought the MiniDSP mic sold by Dayton and run that into my iMac.  Nothing else.

All, I use test tone generators as well as REW.  Tone generators are great for finding room resonances, and when I have a deep null, I like to play the center frequency and walk around the room to find the low and high pressure areas.  Tone generators are great, but REW gives you so much more useful information!  Waterfall plots and impulse graphs are usually more useful than just frequency response curves.  I'm  also starting to  use the REW spectrograph.  

This is a test tone generator I like to use.  You can select frequency or a musical note (assuming 440 Hz tuning).
http://https//www.szynalski.com/tone-generator/
This is an SBIR calculator that is very useful in my opinion. 
http://tripp.com.au/sbir.htm
The Amroc calculator has already been mentioned.  Here is the link\
https://amcoustics.com/tools/amroc?l=20&w=13.9&h=8.1&ft=true&re=EBU%20listening%20ro...



auxinput
2,920 posts
 
By the way, it appears there are tone generators on Spotify, etc. too. Is there a reason not to search out these tones via a streaming service rather than download each one, burn a CD, etc.?
In other words, would this do it?
It depends.  If you can get sweeps that provide a small sweep (i.e. 40hz to 50hz), then it's good.  The list of test tones did not really give you small amount of sweeps.  Sure, you can test at 40hz, then test at 50 hz, but these are sine waves that stay at that frequency (i.e. plays a 50hz sine wave for 20 seconds).

What you need is a sweep.  That is a test tone that starts at 40hz, then gradually increases until it hits 50hz.  This will show the entire span between 40 hz and 50 hz (you could have a bass null around 45hz or so).
hilde45's avatar
hilde45 OP
4,974 posts
 
@auxinput -- got it. Sweep. Thanks. I'll make sure of that.
decooney
1,948 posts
 
Let us know when you are done sweeping up the room.  :) 
hilde45's avatar
hilde45 OP
4,974 posts
 
Well I did some experiments playing the speakers the long way down the room and it was inferior for sure. Placing the speakers on the long wall and playing across the short width of the room was better for imaging and tonal balance. Of course I have not done an extensive analysis of the room with the various tools we are talking about but I could do that at some future point. But, back of the envelope, it is better to put the gear on the long wall.
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